Container closure



June 1e, 1936.

W. T. PARKIN CONTAINER CLOSURE LFiled Jan. 2, 1935 'HHH 12)) Zia-wanton Patented June 16, 1936 CONTAINER CLO Application January 2. 1935, Serial No. 140

2 claims.A (ci. zeig-e2) This invention relates to container closures such, for example, as are used on cans, bottles, tubes or similar receptacles containing powder or granular material or paste which is dispensed 5 in small quantities.

The principal objects -of the invention are to provide a closure which is of simple design and vof pleasing and attractive appearance, which is of economical construction having a minimum number of parts, andwhich is inexpensive to manufacture, easy to assemble and convenient to use; to provide a closure which may be readily manipulated to control or vary the ow through the outlet of the container and which positively seals the outlet when in closed position so that there is no danger of the material accidentally leaking out of the container when not in use; and to provide a closure which will be positively opened and closed by a quick short turn of the cap.

Further objects relate to construction and to the operation of my improved closure and will be apparent from a consideration of the following description and accompanying drawing, wherein: Fig. 1 is a fragmentary elevation of a container having a closure constructed in accordance with the present invention, the parts being shown in closed position;

Fig. 2 is a View similar to Fig. 1, but showing the parts in open or extended position;

Fig. 3 is a. section on the line 3-3 of Fig. l;

Fig. 4 is a vertical section through the container shown in Fig. 2; and

Fig. 5 is an enlarged section on the line 5 5 of Fig. 3.

The embodiment chosen for the purpose of illustration comprises a container IQ, herein shown as a metal can, having an open end provided with the circumferentially extending bead II and an inwardly curved free edge I2 about which a removable collar I4 tightly fits. The collar I el is provided with a cylindrical neck I5 and an end wall spanning the outer end of the cylindrical neck. The shape of the end wall may be varied, but is preferably of dome-like form comprising a conical or tapering part H3 and a dat closed end il; or it might be spherically or otherwise curved, or even flat. The neck I5 is provided with a plurality of circumferentially spaced grooves 28 which may be impressed or otherwise formed in its wall. All of these grooves are inclined tothe axis of the neck at the same angle and their inner ends terminate in circumferentially extending portions 2| disposed at right angles to the axis of the neck and spaced from the lower end of the neck, At the upper side of the apex of the angle of the grooves 28, 2 i, is as'm'all nib'22 projecting slightly into the groove. The tapered portion 'i5 is provided with a plurality of circumferentially disposed apertures 23 which are spaced below the closed end II and constitute the outlets of the container. l

A closure or ca'p member having a cylindrical skirt 25 and a tapered portion 26 provided with an open outer end Z'Ifhas a snug t aboutit-he neck I5 and tapered-portion I6, respectively, so that when the parts are `in closed position, as shown in Fig. 1, the tapered portions I6 and 2t are contiguous to each other, thus completely closing the outlet apertures 23. The skirt 25 is provided with a plurality of inwardly struck protuberances 28, corresponding in number and location tothe grooves 20 in the neck I5, and these protuberances t within and engage the walls of the grooves 20, as shown more clearly in Fig. 5. The grooves 20 and protuberances 28 are so arranged that when the parts are disposed in closed position (Fig. 1), the protuberances 28 are disposed in the circumferentially extending portions 2I of the grooves and the lower edge of the skirt 25 abuts the shoulder of flange 30 on the neck I5 and the closed end Il which projects slightly beyond the conical surface I6 snugly fits within the opening 2l, thus presenting, in effect, a substantially continuous outer surface which is free from recesses and projecting parts which otherwise would detract from the appearance of the container. The cap may advantageously, although not necessarily, be made of metal.

When the closure or cap is rotated counterclockwise, as shown by the arrow in Fig. 1, the protuberances 28, riding in the grooves 28, cause an outward axial movement of the closure to extended position, shown in Figs. 2 and 4, wherein the tapered portions I6 and 2S are separated so as to open the apertures 23 and provide a free communication between these apertures and the discharge opening 21. Similarly, a clockwise rotation of the closure eiiects an inward movement of the cap to closed position, both the inward and outward movements of the closure being limited by the engagement of the protuberances 28 with the ends of the grooves. By reason of the close engagement between the protuberances and grooves, the closure is at all times frictionally held against a free movement, and hence may be held at any adjusted position so that the flow through the outlet openings may be varied as desired.

During either the opening or the closing movement of the cap the protuberances 28 will snap past the small nibs 22, the parts being inherently sufficiently yielding to permit that action. When the protuberances 28 are lodged in the horizontal or circumferential grooves 2| they will be prevented by the nibs 22 from becoming accidentally dislodged and will thus yieldingly lock the cap against being accidentally opened.

While I have shown and described one desirable embodiment of the invention, it is to be understood that this disclosure is for the purpose of illustration only and that various changes in shape, proportion, materials and arrangement of parts, as Well as the substitution of equivalent elements for those shown and described, may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

I claim:

1. A container closure consisting oi' a pair of telescopically disposed, snug fitting, similarly shaped shells relatively movable from a closely nested position to an extended position, each shell having a cylindrical body portion and an inclined wall deiining a frusto-conical shaped end portion, the outer shell having a central opening across the top of its inclined Wall, and the inner shell having a plurality of spaced apertures in its inclined wall and an imperforate top wall adapted to t within said opening in the outer shell when the shells are nested together, the body portion of one of said shells having an inclined groove, a horizontally extending groove com-` municating with said inclined groove and a nib at the junction of the grooves, and the body portion of the other shell having a protuberance engageable with said grooves and operative to efvfect a relative axial movement of said shells in response to relative rotation, said nib being operative to engage said protuberance and hold said shells against accidental relative movement when in closely nested position.

2. A container closure consisting of a pair of telescopically disposed, snug tting, similarly shaped shells relatively movable from a closely nested position to an extended position, each shell having a cylindrical body portion and an inclined wall defining a frusto-conical shaped end portion, the outer shell having a central opening across the top of its inclined Wall and the inner shell having a plurality of spaced apertures in its inclined Wall and an imperforate top wall adapted to t Within said opening in the outer shell when the shells are nested together, the body portion of the inner shell having an inclined groove which terminates in a horizontally extending groove, and a nib at the junction of the horizontal and inclined grooves, and the body portion of the outer shell having a protuberance arranged to engage said grooves and operative to effect a relative axial movement of said shells in response to relative rotation, said protuberance being engageable with said nib to hold said shells against relative rotation When said protuberance is disposed in said horizontal groove.

WINFRED T. PARKIN. 

